Question

daca se pun cate 3 flori intr o vaza raman 14 flori fata vaza .daca se se pyn cate 5 flori intr o vaza raman 2 vaze goale .cate flori si cate vaze sunt ?​

Answer 1

Răspuns:  12 vaze si 50 de flori

Explicație pas cu pas:

Notez numarul vazelor cu ,,v"

Ecuatii:

3 × v + 14 → cate 3 flori in vaza, raman 14 flori fara vaza

5 × ( v - 2 ) → cate 5 flori in vaza, raman 2 vaze goale

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5 × ( v - 2 ) = 3 × v + 14  → flori

5 × v - 10 = 3 × v + 14

5 × v - 3 × v = 14 + 10

2 × v = 24

v = 24 : 2              ⇒     v = 12 ( vaze)

12 × 3 + 14 = 36 + 14 = 50 ( flori )

Answer 2

5 × ( v - 2 ) = 3 × v + 14

5 × v - 5 × 2 = 3 × v + 14

5 × v - 10 = 3 × v + 14

5 × v - 3 × v = 14 + 10

2 × v = 24

v = 24 : 2

v = 12 vaze

5 × ( 12 - 2 ) =

5 × 10 = 50 flori